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-rw-r--r--pcr/sysvinit/0002-remove-ansi-escape-codes-from-log-file.patch80
1 files changed, 80 insertions, 0 deletions
diff --git a/pcr/sysvinit/0002-remove-ansi-escape-codes-from-log-file.patch b/pcr/sysvinit/0002-remove-ansi-escape-codes-from-log-file.patch
new file mode 100644
index 000000000..89b3280df
--- /dev/null
+++ b/pcr/sysvinit/0002-remove-ansi-escape-codes-from-log-file.patch
@@ -0,0 +1,80 @@
+From 8d0022d9540112a92ce8d88c91c4ac10bad8c9ef Mon Sep 17 00:00:00 2001
+From: Florian Pritz <bluewind@xinu.at>
+Date: Sun, 24 Jun 2012 15:49:51 +0200
+Subject: [PATCH 2/2] remove ansi escape codes from log file
+
+References: https://en.wikipedia.org/wiki/ANSI_escape_code
+
+Signed-off-by: Florian Pritz <bluewind@xinu.at>
+---
+ bootlogd.c | 45 +++++++++++++++++++++++++++++++++++++++++++--
+ 1 file changed, 43 insertions(+), 2 deletions(-)
+
+diff --git a/bootlogd.c b/bootlogd.c
+index e36e261..88e610d 100644
+--- a/bootlogd.c
++++ b/bootlogd.c
+@@ -349,6 +349,7 @@ void writelog(FILE *fp, unsigned char *ptr, int len)
+ int dosync = 0;
+ int i;
+ static int first_run = 1;
++ static int inside_esc = 0;
+
+ for (i = 0; i < len; i++) {
+ int ignore = 0;
+@@ -364,10 +365,50 @@ void writelog(FILE *fp, unsigned char *ptr, int len)
+ first_run = 0;
+ }
+
+- if (*ptr == '\r') {
+- ignore = 1;
++ /* remove escape sequences, but do it in a way that allows us to stop
++ * in the middle in case the string was cut off */
++ if (inside_esc == 1) {
++ /* first '[' is special because if we encounter it again, it should be considered the final byte */
++ if (*ptr == '[') {
++ /* multi char sequence */
++ ignore = 1;
++ inside_esc = 2;
++ } else {
++ /* single char sequence */
++ if (*ptr >= 64 && *ptr <= 95) {
++ ignore = 1;
++ }
++ inside_esc = 0;
++ }
++ } else if (inside_esc == 2) {
++ switch (*ptr) {
++ case '0' ... '9': /* intermediate chars of escape sequence */
++ case ';':
++ case 32 ... 47:
++ if (inside_esc) {
++ ignore = 1;
++ }
++ break;
++ case 64 ... 126: /* final char of escape sequence */
++ if (inside_esc) {
++ ignore = 1;
++ inside_esc = 0;
++ }
++ break;
++ }
++ } else {
++ switch (*ptr) {
++ case '\r':
++ ignore = 1;
++ break;
++ case 27: /* ESC */
++ ignore = 1;
++ inside_esc = 1;
++ break;
++ }
+ }
+
++
+ if (!ignore) {
+ fwrite(ptr, sizeof(char), 1, fp);
+ }
+--
+1.7.10.4
+